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Bullfrog
                        
                        BULLFROG, common name for an amphibian of the true frog family, named for the
                        male?s deep resonant croak, which sounds something like a bull?s bellow. The
                        bullfrog is the largest frog in the U.S. Native to eastern North America, it is found
                        from Canada to Mexico, around quiet lakes and ponds; it has also been introduced
                        into some western states. These carnivorous amphibians are dull green, with a
                        yellowish or white belly, and dark, barred legs. Their hind legs (up to 25 cm/10 in)
                        are longer than their bodies (20 cm/8 in) and are often consumed as a delicacy. The
                        large "ears," or tympani, behind the eyes are specifically receptive to the mating
                        calls of other bullfrogs. On spring nights, males float in the water, giving their calls.
                        They are aggressive in defending their territories and attack intruders violently. The
                        female lays up to 10,000 eggs, which hatch into dark-spotted tadpoles that take a
                        year to mature into frogs in warm climates and two or three years in cooler
                        climates. Certain frogs found in Africa, India, and Malaysia are also called bullfrogs.
 

 
COMMON NAME FAMILY GENUS AND SPECIES
American bullfrog Ranidae Rana catesbeiana